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Thread: fuel guage

  1. #1

    Default fuel guage

    2500HD

    Filled the tank one day and the next day a amber light on dash a fuel gauge shows empty.

    Any ideas on how to troubleshoot this?

  2. #2

    Default

    Just going to ask the obvious.... Are you sure you actually still have fuel in the tank? Are you sure someone didn't crawl under the truck and empty your tank for you? I've had my fuel tank messed with before.
    csltrains96
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  3. #3

    Default

    Probably the sending unit in the tank.

    1995 Silverado 4x4
    6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
    4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge

    2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors, http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
    2002 Silverado ext cab 2wd (Sold)
    2003 Yukon XL (Totaled)

  4. #4

    Default

    Sending unit more than likely

    2009 Chevrolet Silverado 1500 LT Z71 Crew Cab "All-Star Edition"

    Line-X'd Bed
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    275/65R18 Toyo Open Country AT2's
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  5. #5
    Legend

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    Default

    if you have a early 2000 model this is a widespread GM part failure. the pickup material used in the fuel tank reacts with the alcohol in the fuel to create a film that interferes with the signal to the PCM/dash indicator.

    use a bottle of techron fuel injector cleaner with a few ounces of marvel mystery oil to a full tank. this will aid in reducing the time it will show the wrong level.

    the newer fuel pump assy have been made to overcome this .

  6. #6

    Default

    Thanks all

    The truck was in a locked garage.

    I forgot to mention it's a diesel.

    If it is the sensor, Does the tank need to be empty and removed to change sensor?

  7. #7

    Default

    Quote Originally Posted by amos65 View Post
    Thanks all

    The truck was in a locked garage.

    I forgot to mention it's a diesel.

    If it is the sensor, Does the tank need to be empty and removed to change sensor?
    It depends on your approach to replacing the sending unit. I replaced mine last December and my dad and I just lifted off the bed and pulled the sending unit from the top of the tank where goes in. I had about half a tank of fuel in it. If you leve the bed on and drop the tank from under the truck, it will make it lighter/easier if the tank is empty.
    Clint (TX) 2001 Silverado LS 4.8L auto 2wd ECSB [GARAGE]
    Gasoline or gunpowder: If you ain't burning one, you ain't having fun!
    NRA Endowment Member 5 24 48 88 - Hendrick Motorsports FTW!

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